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White Mountains Insurance Group WTM WTM Partners — Net investment income

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Other financials

Income statement

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Revenue$844.6M+22.5%
Gross profit$764.5M+18.2%
Net income$199.5M+62.3%

Balance sheet

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Total debt$932.5M+34.2%
Total equity$5.4B+16.0%
Total assets$13.8B+16.4%

Cash flow

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Operating cash flow-$55.5M-131%

Valuation

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Market cap$5.3B+15.6%
P/E4.7×
P/S1.4×-0.5×

Profitability

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Gross margin94.1%-3.2pp
Net margin29.3%

Returns & leverage

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Return on equity22.4%
Debt / equity0.2×0.0×

Where this comes from

Reported directly by White Mountains Insurance Group in its filing.

Tagged under the XBRL concept us-gaap:NetInvestmentIncome.

The source filing: White Mountains Insurance Group’s 10-Q, filed August 6, 2026.

Filed
Aug 6, 2026, 8:50 AM EDT
Fiscal quarter
Q2 FY2026
Calendar quarter
Q2 2026
Accession
0001628280-26-053932
Millions / Three Months Ended June 30, 2026Ark/WM Outrigger / ArkArk/WM Outrigger / WM Outrigger ReKuduHG GlobalDistinguishedWTM PartnersOther OperationsTotal
Earned insurance premiums (1)$375.4$.8$7.7$.7$384.6
Net investment income (2)26.91.119.07.8.615.570.9
Net realized and unrealized investment gains (losses) (2)30.549.7(2.0)72.4150.6
Net realized and unrealized investment gains (losses) from investment in MediaAlpha58.458.4
Interest income from BAM Surplus Notes6.96.9
Commission and fee revenues (1)56.63.860.4
Product and services revenues92.814.7107.5
Other revenues (1) (2)4.9.2.25.3

Item 1. Financial Statements (Unaudited)

FAQ

What is White Mountains Insurance Group's WTM partners — net investment income?
White Mountains Insurance Group (WTM) reported WTM partners — net investment income of $0 in Q2 2026.
What does WTM partners — net investment income mean?
This metric captures the income generated from the WTM Partners segment's investment portfolio, including interest, dividends, and realized gains, net of investment expenses. It reflects the segment's ability to generate returns on its float and capital base. High investment income is essential for offsetting underwriting risks and contributing to overall segment profitability.

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